219641 has 4 divisors (see below), whose sum is σ = 220800. Its totient is φ = 218484.

The previous prime is 219629. The next prime is 219647. The reversal of 219641 is 146912.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 219641 - 2⁶ = 219577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221 + ... + 698.

It is an arithmetic number, because the mean of its divisors is an integer number (55200).

2²¹⁹⁶⁴¹ is an apocalyptic number.

It is an amenable number.

219641 is a deficient number, since it is larger than the sum of its proper divisors (1159).

219641 is an equidigital number, since it uses as much as digits as its factorization.

219641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158.

The product of its digits is 432, while the sum is 23.

The square root of 219641 is about 468.6587244467. The cubic root of 219641 is about 60.3352528989.

The spelling of 219641 in words is "two hundred nineteen thousand, six hundred forty-one".